ALERTS. A 13 YEAR OLD BOY HELD UP AT KNIFE-POINT ON A POPULAR TRAIL. BUT AS 12 NEWS CHRISTINA PALLADINO REPORTS--- NEW TECHNOLOGY ON HIS IPHONE HELPED POLICE CATCH THE ACCUSED THIEF MOMENTS LATER. MILWAUKEE POLICE OFFICER STEPHEN DOMBROWSKI AND SERGEANT CHRISTOPHER ELSER OUT OF DISTRICT THREE EXPLAIN HOW A NEW, IPHONE PROGRAM IS SOLVING MANY CRIMES ON CITY STREETS. "USING I-CLOUD IS A NEWER TECHNOLOGY THAT NOT EVERYBODY KNOWS ABOUT...IF YOU DON'T HAVE AN IPHONE YOU DON'T KNOW WHAT IT IS." OFFICER DOMBROWSKI IS REFERRING TO AN APP CALLED "FIND MY IPHONE" THAT'S FREE AND EASY TO USE WHEN YOUR PHONE IS LOST OR STOLEN. WEDNESDAY--DOMBRO WSKI AND SERGEANT ELSER USED THE APP AFTER ASSISTING A 13 YEAR OLD WEST ALLIS BOY WHO'D BEEN ROBBED OF HIS BIKE AND PHONE AT KNIFE- POINT. "POLICE SAY THE INCIDENT HAPPENED HERE ALONG THE HANK AARON TRAIL NEAR 72ND ST WHEN THE SUSPECT JUMPED OUT ONTO THE TRAIL AND CONFRONTED THE BOY ON HIS BIKE. HE PUSHED THE BOY OFF THE BIKE, PULLED OUT A KNIFE AND THEN RAIDED HIS POCKETS, STEALING HIS IPHONE." WITH THE HELP OF THE APP--POLICE SAY THEY TRACKED 18 YEAR OLD KENYACIES PHIPPS TO A NEARBY HOME. "AS WE LEFT THE SCENE WE HAD AN OFFICER HERE AT THE DISTRICT TRACKING IT LIVE AS WE HEADED TO THE AREA OF 41ST AND CENTER... WHERE WE HAD AN EXACT LOCATION OF WHERE THE CELL PHONE WAS EDITED AT." POLICE TELL US THEY SAW THE WEST ALLIS BOY'S BIKE ON PHIPPS' FRONT LAWN AND EVENTUALLY FOUND PHIPPS HIDING IN THE BASEMENT WITH THE STOLEN IPHONE. POLICE SAY ANYONE CAN BENEFIT FROM THIS TECHNOLOGY. "IF THEY TAKE THE TIME TO SET UP THEIR ACCOUNT SET UP THEIR GPS TRACKING CAPABILITIES, THAT HELPS US IMMENSLEY." IN MILWAUKEE... CHRISTINA PALLADINO, WISN 12 NEWS. TWO MILWAUKEE MEN